# BMI Calculator・Weight Tracker vs Sick Log

The clearest difference is update cadence: Sick Log at monthly against BMI Calculator・Weight Tracker's every 2 months. BMI Calculator・Weight Tracker's advantage is device support (3 vs 1) and iOS requirement (14.0 vs 26.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. BMI Calculator・Weight Tracker sells 5 in-app purchases, starting at $9.99 per month and Sick Log sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

BMI Calculator・Weight Tracker ships an update every 2 months, Sick Log monthly. The most recent releases landed on October 27, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | BMI Calculator・Weight Tracker | Sick Log |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (517 ratings)](https://appshunter.io/ios/app/bmi-calculatorweight-tracker/id1560499972/reviews)** | — |
| Number of ratings | **517** | — |
| Positive reviews | 84.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | Freemium | — |
| Size | 53 MB | 2 MB |
| Requires iOS | **14.0** | 26.0 |
| Devices | **iPhone, iPod, Apple Watch** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [AboutMe Apps, Inc.](https://appshunter.io/developer/1088980079) | [Min ho Kim](https://appshunter.io/developer/1005507111) |

## What reviewers say

### BMI Calculator・Weight Tracker

[App page](https://appshunter.io/ios/app/bmi-calculatorweight-tracker/id1560499972)

Easily calculate your Body Mass Index (BMI) and track your weight progress. Visualize your trends with graphs, gain predictive insights, and set goals for your health journey. Supports metric and imperial systems, with Apple Watch integration.

**Highlights:** BMI Calculation, Weight Tracking, Metric and Imperial Systems, Apple Watch Integration, Graphs and Stats, Predictive Insights

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monitor your weight & progress | $9.99 | per month |
| Monthly Premium | $9.99 | per month |
| Predict your future weight＋BMI | $19.99 | per year |
| Premium Year | $19.99 | per year |
| Premium 3 Months | $19.99 | per 3 months |

**What reviewers like**

- 👍 Simple and easy-to-use interface
- 📊 Effective weight tracking and logging
- 🎨 Aesthetically pleasing design
- ⚡ Quick daily input process
- 🏥 Integrates with Apple Health

**What reviewers complain about**

- 🐛 App crashes after recent updates
- 🐛 App won't open on iOS 17.5.1
- 😔 Potentially negative psychological impact with BMI labels
- 🎨 Loss of color customization options

**Reported bugs**

- App stopped working after June 2024 update
- Crashes on iPad Air (5th Generation) with iOS 17.5.1
- Unable to open app on latest iOS versions
- App fails to launch after recent updates

**Requested features**

- Restore different color options for tracking
- More sensitive language for BMI categorization


### Sick Log

[App page](https://appshunter.io/ios/app/sick-log-illness-tracker/id6809639690)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sick Log Pro | $2.99 | one-time |


## Frequently asked questions

### Is BMI Calculator・Weight Tracker free?

BMI Calculator・Weight Tracker is free to download, with in-app purchases available.

### Is Sick Log free?

Sick Log is free to download, with in-app purchases available.

### Do BMI Calculator・Weight Tracker or Sick Log have ads?

Neither BMI Calculator・Weight Tracker nor Sick Log shows ads.

### Which is updated more often, BMI Calculator・Weight Tracker or Sick Log?

BMI Calculator・Weight Tracker ships an update every 2 months, and Sick Log monthly. Most recently, BMI Calculator・Weight Tracker was updated on October 27, 2026 and Sick Log on October 24, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*